[osg-users] Updating a PositionAttitudeTransform node from another PositionAttitudeTransform node

[Voerman, L.]

Hi Dan,
I think your expectations are off. pose2 gets the postition from the node2
matrix, not the world postition.
to retrieve the world position you need to have a nodepath, so you can
call osg::computeLocalToWorld( fullNodePath );
In your case this might be just the product for the node1 matix and node2
matrix.
Laurens.

On Wed, Oct 9, 2019 at 10:26 AM Dan johansson <johansson_dan at hotmail.com>
wrote:

> Hi,
>
> I've ran into a seemingly easy problem that i have failed to find an
> answer for. I've simplified the problem here to quickly describe my
> question. I'm setting a Pat node as parent to another Pat node and re
> positioning it. The updated position is not translated to the child and i
> wonder why this behavior occurs. Any help on the issue is welcome.
>
>
>
>
>
>
> Code:
>
>
> osg::ref_ptr<osg::PositionAttitudeTransform> node1 = new
> osg::PositionAttitudeTransform;
> osg::ref_ptr<osg::PositionAttitudeTransform> node2 = new
> osg::PositionAttitudeTransform;
>
> node1->setDataVariance(osg::Object::DYNAMIC);
> node2->setDataVariance(osg::Object::DYNAMIC);
>
> node1->setPosition((osg::Vec3f(0.f,0.f,0.f)));
> node2->setPosition((osg::Vec3f(0.f,0.f,0.f)));
>
> node1->addChild(node2.get());
> node1->setPosition(osg::Vec3f(10.f,10.f,10.f));
>
> osg::Vec3f pose2 = node2->getPosition();
>
> //pose2 is still at (0,0,0)
>
>
>
>
>
>
> //Regards Dan
>
> ------------------
> Read this topic online here:
> http://forum.openscenegraph.org/viewtopic.php?p=76810#76810
>
>
>
>
>
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